Which Idea was once accepted is now considered a scientifically inaccurate
A.tge nucleus is the center of the atom
b.an atom is solid material
c.electrons have a negative charge
d.electrons are arranged in layers
Well, the nucleus is the center, the electrons are negative and arranged in layers, so atoms are not necessarily solid (you know, liquids, gases and plasma is made of atoms too -- plasma from ions, true)
